LG 55SL8500 Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LD91K

MODEL : 55SL8500

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL58858421 (0911-REV00)

North/Latin America

Europe/Africa

Asia/Oceania

55SL8500-ZA

Internal Use Only

http://aic.lgservice.com

http://eic.lgservice.com

http://biz.lgservice.com

Printed in Korea

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Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LD91K MODEL : 55SL8500 55SL8500-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL58858421 (0911-REV00) Printed in Korea...
Page 2: Table Of Contents
PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................29 EXPLODED VIEW .................. 37 SVC. SHEET ....................Copyright ©2009 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
Page 3: Safety Precautions
An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright ©2009 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
Page 4: Servicing Precautions
Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright ©2009 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright ©2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 6: Application Range
With inverter Pixel Pitch 0.630 (H) x 0.630 (D) Back Light CCFL Display Colors 1.06Billion(true) colors Coating 3H(Hard coating) Copyright ©2009 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7: Component Video Input
1920x1080 33.75 60.00 HDTV 1080i 1920x1080 33.72 59.94 HDTV 1080i 1920x1080 56.250 HDTV 1080p 1920x1080 67.43/67.5 59.94/60 HDTV 1080p Copyright ©2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8: Hdmi Input
--> 640*480 60Hz Display 800*600 37.879 60.31 1024*768 48.363 60.00 1280*768 47.78 1360*768 47.72 59.8 1280*1024 63.595 60.0 1920*1080 66.587 59.93 Copyright ©2009 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9: Adjustment Instruction
3) Click “Read” tab, and then load download file (XXXX.bin) by clicking “Read” fi lexxx.bin Copyright ©2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10: Function Check
4) RGB (PC : 1024 x 768 @ 60hz) 5) HDMI 6) PC Audio In * Display and Sound check is executed by Remote control. Copyright ©2009 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11 C0. (when R/G/B Gain are all C0, it is the FULL Dynamic Range of Module) Copyright ©2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12: Auto Download
03 0C 00 20 00 B8 2D HDMI3 03 0C 00 30 00 B8 2D HDMI4 03 0C 00 40 00 B8 2D Copyright ©2009 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13 C. Serial number D/L must be conformed when it is produced in production line, because serial number D/L is mandatory by D-book 4.0. Copyright ©2009 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 14: Troubleshooting
Replace MAIN B’D IC103 Replace MAIN B’D Replace MAIN B’D IC100 NAND FLASH Serial Flash IC300, IC301 DDR2 Memory Copyright ©2009 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 15 Replace MAIN B’ D IC902 Replace MAIN B’ D Replace MAIN B’D IC900 Serial FLASH IC1000, IC1001 DDR2 Memory Copyright ©2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 16 Replace MAIN B’D IC1200 31.875MHz ? MAIN B ’ D X1201 Clock Replace MAIN B’D IC1203 20.25MHz ? Replace Main board IC100 Copyright ©2009 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
Page 17 Check MAIN B’ D R211 (RED) R212 (GREEN) Replace R213 (BLUE) MAIN B’D R211, R212, R213 Video Signal ? Replace MAIN B’D IC 100 Copyright ©2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 18 Video Signal ? Check the Trouble Shooting Guide Check MAIN B’D R1182 Analog TV No video Video Signal ? Copyright ©2009 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
Page 19 C216 (BLUE) MAIN B’D C215 or C209 or C214 or C216 Video Signal ? Replace MAIN B’D IC 100 Copyright ©2009 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
Page 20 C207 (GREEN) Replace C213 (BLUE) MAIN B’D C212 or C207 or C213 Video Signal ? Replace MAIN B’D IC 100 Copyright ©2009 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
Page 21 MAIN B’D IC600 Replace IC100 * This case is that HDMI Video doesn't display at the some HDMI input, not all. Copyright ©2009 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
Page 22 MAIN B ’ D R1216 Signal (SIF) Replace MAIN B’D IC1200 MAIN B ’ D C1269 Signal (SIF) Replace MAIN B’D IC1203 Copyright ©2009 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
Page 23 C2008 (Right Sound) Replace MAIN B’D IC 100 C2009 (Left Sound) signal ? Check MAIN B’ D C2008, C2009 Copyright ©2009 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
Page 24 MAIN B’D C2013 (Right Sound) Replace MAIN B’D IC 100 C2014 (Left Sound) signal ? Check MAIN B’D C2013, C2014 Copyright ©2009 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
Page 25 MAIN B’D R239 (Right Sound) Replace MAIN B’D IC 100 R240 (Left Sound) signal ? Replace MAIN B’ D IC1103 Copyright ©2009 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
Page 26 MAIN B’D R237 (Right Sound) Replace MAIN B’D IC 100 R238 (Left Sound) signal ? Replace MAIN B’D IC702 Copyright ©2009 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
Page 27 Check MAIN B’D Check MAIN B’D P701 R748 5V ? Check MAIN B’D Replace MAIN B’D Q702 L821 5V ? Copyright ©2009 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
Page 28 2.25V Vol- 0.2V Replace Soft-touch+ Middle bottom ass’y And check the sensitivity Of In-start menu Vol+ 0.85V 1.6V 2.25V Copyright ©2009 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
Page 29: Block Diagram
BLOCK DIAGRAM 74LCX244 Buffer CI Slot 74LVC541A Buffer Copyright ©2009 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
Page 37: Exploded View
X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 37 - LGE Internal Use Only Only for training and service purposes...
Page 38 EAX60890803 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN_1 Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 39 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN_2 MAIN_2 Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 40 EAX60890803 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. DDR2 DDR2 Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 41 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. INTERFACE INTERFACE Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 42 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCIA PCMCIA Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 43 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI HDMI Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 44 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS EAX60890803 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 45 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER POWER Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 46 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART SCART Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 47 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER TUNER Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 48 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS EAX60890803 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 49 2009.06.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FRC DDR2 Copyright ©2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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LG 55SL8500 Service Manual

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